Ace Tone is known as the predecessor to Roland, and these combo organs from the 60's are essentially prototypes of the classic synths that Roland later became famous for. This simple and gorgeous combo organ has a couple of sounds, but they all sound fantastic and give you instant classic tones when running it through our Cordovox CL-20 rotary speaker. In our opinion, these sound better than the other combo organs of the time and have much more character and soul than a Farfisa or a Vox.